Table 2.

Validation data for intra- (n = 5) and inter-assay (n = 3) precision and accuracy

Analyte (concentration in ng/g)	Intra-assay precision (%CV)	Intra-assay accuracy (%)	Inter-assay precision (%CV)	Inter-assay accuracy (%)
TAM
40	2.56	80.5	5.94	100
400	2.40	95.4	4.94	106
1,000	1.58	104	4.54	102
DMT
40	3.27	83.3	8.96	102
400	3.34	92.1	1.96	106
1,000	1.44	99.9	2.09	99.6
4-OH
4	3.36	87.3	6.56	101
40	2.78	98.0	1.80	106
100	3.72	103	0.661	100
Endoxifen
4	3.86	86.9	5.66	82.5
40	2.47	93.2	0.710	105
100	2.62	97.5	3.19	95.3